STA311B Overview
Moreover, the book has an appendix that contains a case study. There is only one mounting type recommended for the product, which is Surface Mount. There is a 56-VFQFN Exposed Pad case embedded in it. In this case, the device has 8 channels. There are Fully Integrated Processor functions included in this part for your reference. This device can be applied in both Pre-Amplifier and X directions. As far as I know, it is supplied within 3V~3.6V days. In this device, the temperature range is -40°C~125°C TJ, which is the range of this device. There are 56 terminations on the chip, which is the number of terminations on the chip. The chip has 56 pins that are accessible from the outside. As long as the supply voltage is greater than 3.3V, it can handle it. Devices using the telecom IC type TELECOM CIRCUIT are used in this device.
STA311B Features
With 56-VFQFN Exposed Pad channels
operate temperature at the range of -40°C~125°C TJ
Supply voltage at 3.3V volts

STA311B Applications
There are a lot of STMicroelectronics
STA311B Audio Special Purpose applications.

High-End Audio/Sound Card for PC
Replacement of DIR1703
Other Applications Requiring S/PDIF Receiver
Audio Differential Line Drivers
Audio Mix Consoles
Distribution Amplifiers
Graphic and P arametric Equalizers
Dynamic Range Processors
Digital Effects Processors
Telecom Systems

Factory Lead Time	12 Weeks
Mounting Type	Surface Mount
Package / Case	56-VFQFN Exposed Pad
Surface Mount	YES
Number of Pins	56
Operating Temperature	-40°C~125°C TJ
Packaging	Tray
Part Status	Active
Number of Terminations	56
ECCN Code	EAR99
Applications	Pre-Amplifier
Voltage - Supply	3V~3.6V
Terminal Position	QUAD
Supply Voltage	3.3V
Terminal Pitch	0.5mm
Function	Fully Integrated Processor
Number of Channels	8
Interface	I2C, I2S
Telecom IC Type	TELECOM CIRCUIT
Height Seated (Max)	1mm
Radiation Hardening	No
RoHS Status	RoHS Compliant